For the general rank-1 update, the calling sequences are given by place HR here
place HR here All parameters are passed as part of linear algebra objects alpha, a, x, beta, and y.
When a node calls PLA_Local_ger, the operation is equivalent to extracting the local information (datatype, dimensions, and pointers to the buffers) and locally performing the rank-1 update. The local dimension of alpha must be , but it can be of any object type. The local dimensions of a, x, and y must be such that the operation is well-defined. All objects must have the same datatype. Notice: no communication is performed as part of this call. Thus, all information must be locally available.
All nodes must simultaneously call PLA_Ger, which performs the BLAS call on the distributed objects. Parameter alpha must now be a multiscalar. Parameter a must be of object type matrix. Parameters x and y must of a vector object type, including vector, projected vector, or duplicated projected vector. The global dimensions of the different objects must be such that the operation is well-defined.